A corposatiost



H. L. FISCHER.

PENCIL.

APPLICATION FILED JULY 2,1920.

1,4k30,970; Patented 0st. 3, 1922.

Patented Oct. 3, 1922.

UNITED at -p 1 a l "l til l i HOWARDL. nrsennn, or en rent, imnnnso'ra,.assrenon no nnowiv a nrennow, or

- ST, PAUL, ivrrnnnso'ra n ootaronnrmn' on 'irrnn'nsorn.

PENCIL. v

Application filed Julyfl, 1920. Serial 1%. 393,681.

To all whom it may concern:

Be it known that I, l-lowann L. Freer-me, a citizen of the United Statesoi America, residing at St. Paul, in the county of Ramsey and State ofMinnesota, have invented certain new and useful Improvements in Fencils,of which the following is a specification.

My invention relates to pencils, the primary object of which is toprovide a pencil with a sectional lead-propelling means removably heldin the pencil casing to allow thedift'erent sections of the pencil to beremoved independently.

A further object of the invention is in means whereby the entirecontents of the magazine can bewithdrawn and to leave the pencil casingentirely empty when the lead propelling mechanism in its entirety iswith drawn from the casing.

The invention further provides means whereby the lead-prope].lingmechanism cooperates with the pencil casing to form a magazine for extramarking leads giving a pencil oi :rtremely simple construction. andwherein only a small number of parts are required.

i a It is also an object of the invention to provide frictionalresilient means between the sections of the lead-propelling means tohold. the same against free movement and to take up the wear of theoperating parts so that a uniform contact is provided between the parts.

In the drawings specification Figure 1 is my pencil Figure 2 is aperspective view illustrating the extra marking leads distended from themagazine when the same is opened Figure 3 is a perspective view of theoperatingsection of the pro oellingmeans;

Figure 4 is a perspective view of the threaded section of the propellingmeana Figure 5 is a cross section on the line VV of Figure 1,

Figure 6 is a detail of the forward. end oftheoperating sectionillustrating an alternative form,

Figure 7 is a perspective view 01 thelead carrier.

In the drawing the pencil A is provided with acasing 10 having a forwardconical. end 11 with an opening 12, at the apex of forming a part of thea side sectional elevation oi? the same through which the marking lead13 extends when in writing position.

The casing 10 is formed of thin tubing and houses the lead-propellingmechanism B which is made up of the sectional members let and 15. Themember i l is formed of thin tubing and is spaced from the casino 1Obythe washer collar 16 attached to thl e forward or inner end oi themember 14 while the rear end of the member 1a is connected detachablywith the casing by the closure head 17. Each of the meinbers 16 and 17are rigidly attached in a suitable manner to the member 14;.

The member 14: is threaded througl iout its length, the threads 18 beingformed therein by rolling or otherwise so as to formthread-pii'ojections on the inner surface of the member 14L. i

The member is tubular and is formed with a longitudinal slot 19. Anoperating head 20 is rigidly attached to the rear end oi the member 15,said member carrying the lead-carrier 21 which is :Eorn'ied with.aleadreceiving socket on its forward end adapted to receive the butt endof the mar-lo ing lea (113 while a spring tongue or arm 23 is formedprojecting from the rear end of the carrier 21, the lead-carrier is heldagainst disengagement from the slot 1.9 by the shoulder formed on theforward end oi the member 15. The member 15 together with the leadcarrier 21 is similar in construction and lunction to the member. 16 andleadrarrier 155 in my patent application Fierial No. 891.409 filed June24:, 19:20.

Lead-propelling mechanism being composed of the members 14 and 1.5, whenput together appears in the assembled position as illustrated. inFigure 1. lln this position the member 15 extends through the threadedmember ll, the. member 15 engaging the threads 18 of the member 14"frictionally and the lead-carrier 21 forming frictional resilient meansbetweenthe members 14; and 15, the notches or threads 25 formed in thecarrier 21 engage the threads 18 of the member 1n the assembled positionof the leadpropelling mechanism longitudinal slot 19 allows the member15 to be withdrawn from the member 14: to determine the remaining unusedlead in the pencil A as illustrated in dotted outline in Figure 1. Thelead-earrier 21 forms a stop to limit withdrawing or longitudinalmovement of the member 15. by engaging withthe shoulder 24.

The lead-carrier 21 can be forced to slide longitudinally of the member14 and in the I member 15 when more than writing pressure is exertedagainst the marking lead 13 to release the same into the casing 10 topro tect the marking lead against being broken when the pencil falls onthe point or if otherwise struck on the writing point. When the carrier21 is slid over the threads 18 it 17 rigidly attaches the member 14against rotation in the casing 10 and closes the rear endof the magazine26 formed about the propelling mechanism B.

The sections 14 and 1 5 of the lead-proellin mechanism are se arable asillus- P e P tratedby Figures 3.and 4, thus the operating member 15 canbe withdrawn and separated from the member 14 without opening ordisengaging the magazine member 14.

.This is an important feature of the invention as it protectsthe markingleads against falling out of the pencil when the member 15 is partlywithdrawn from the member 14, and a separate closure 17 is provided forthe rear end of the magazine. When an extra or new marking lead is dc-'sired, the closure 17 1s disengaged from the rear end of the pencilcasing and the member "tpa tialy withdrawn from the casing, to distendthe extra marking leads 27 so they can be easily engaged and removedfrom the magazine.) By entirely withdrawing the op erating mechanism Bor the member 14 from the casing 10, .the entire contents of themagazine is removed from the pencil casing... I

Figurefi illustrates an enlarged detail of the forward end of the member15. The spring fingers v28 are formed integral with the member 15 andare adapted to engage against: the outer surface of the washer 16 tohold amember 15 in additionto the frictional engagementbetween themembers 14 and 15 so as to prevent free longitudinal movement of thesame but allowing a separation of the members 14 and 15 when it isdesired.

What I claim as new is 1. In a pencil, a casing having an openingadjacent the writingpoint, and a removable lead-carrying unit formed ofdetachable sections, one of said sections being adapted tocooperatewiththe casing to form a leadcarrying compartment, the other seetioncooperating with the first section to present a lead through saidopening at the writing point at will.

2. In a pencil, a casing having an opening adjacent the Writing point,and a removable lead-carrying unit formed of separable sections, one ofsaid sections being adapted to cooperate with the casing to form acircular lead-carrying compartment, the other section cooperating withthe first section to propel and repel a lead in said unit and pencil.

3. In a pencil, a casing, and a lead carrying unit formed of sections,one of said sections being adapted to cooperate with the casing to forma lead carrying compartment, the other section being operative topresent a lead at the writing point of the casing, said sections beingremovable from said casing collectively and selectively.

4. In a pencil, a casing, and a lead operating unit formed of sectionsnormally held in said casing, said sections being removable from thecasing selectively and collectively.

5. In a pencil, a casing having an opening adjacent the writing point,and a sectional lead-carrying unit, one of said sections being adaptedto cooperate with the casing to form a lead-carrying compartment, theother section being operative to present a lead through said opening,said sections being removable from the casing collectively, said lattersection being removable independently of the first section.

6. In a mechanical pencil, a casing. a removable sectional leadoperating unit and means for releasably locking the sections of the unitagainst relative longitudinal movement to each other.

7. In a pencil, a casing having an opening adjacent the writing point,and a Sec-Q tional lead-carrying unit, forming a leadpropellingmechanism, one of said sections cooperating with the casing to form aleadcarrying compartment and having a closure for said compartment onits rear end and the other of said sections being independentlyseparable from said casing without opening said lead compartment, saidlast section forming the operating means for said propelling mechanism,and adapted to carry the marking lead in writing position in saidpencil.

8. In a pencil, a casing, a removable sectional lead operating unit,means for separably locking the sections of the unit against relativelongitudinal movement to each other and means for locking the unit insaid casing.

9. In a pencil, including a lead-propelling means comprising a removabletubular threaded member, a removable tubular operating member extendinginto said threaded member and separable therefrom and a lead carrieradapted to be operated by said operating member.

10. In a pencil, including a removable lead-propelling means, comprisinga tubular threaded element detachably connected to the body of saidpencil, a tubular longitudi nally slotted element rotatably andlongitudinally slidable in said threaded element and a lead-carrieradapted to travel in said slotted element and to form frictional springcontact between said threaded element and said slotted element toprevent iree rotary or longitudinal movement of the same, said tubularslotted element being detachable in,- dependently from said threadedelement.

11. In a pencil, a barrel, a threaded tubular member having a shoulderon one end freely contacting with the inner surface of said barrel,attaching means on the other end, to secure said threaded member againstrotation through said barrel with a space forming a magazine about saidthreaded member, a tubular operating member detachably, rotatably andlongitudinally slidable in said threaded member, and lead carrying meansadapted to resiliently con nect said threaded and operating member toform frictional holding means between the same and a stop to limitlongitudinal movement of said operating member.

12. In a pencil, including a removable and separable leadpropellingmeans, portion of said propelling means being adapted to cooperate withthe pencil body to term a magazine about said propelling means, theoperating member of said propelling means extending axially in saidpencil being rotatably or longitudinally movable and separable withoutopening the magazine.

13. In a pencil, a casing having a forward conical end, and a rear openend, a tubular threaded member having a spacing washer on its forwardend, and a closure attaching means on its other end, said tubularthreaded member cooperating with said casing to form a lead magazine andattached to said casing at its rear open end by said closure, saidthreaded member being adapted to withdraw and expose marking leads heldin said magazine when the same is withdrawn from said casing, and anoperating member adapted to extend axially through said threaded memberand detachably connected therewith to hold the marking lead in writingposition in said pencil.

141-. In a pencil, having a casing, a sectional lead-operating unitadapted to be en closed in said casing, one at said sections beingadapted to cooperate with the casing to form a lead compartment having aclosure on its rear end adapted to attach said section to said casingand the other of said sections of said operating unit being independently separable from the first section to insert a new marking leadin marking position in said last-named section without opening the leadcompartment.

15. In a pencil, including a barrel, a removable lead-propelling meansthe outer wall of which forms the inner wall of a magazine about saidpropelling means, the rear end of the inner wall of the magazine forminga closure for the same, actuating means extending through the magazineclosure detachably secured by spring tension and extending axially insaid pencil, a magazine closure adapted to detachably engagethe innerwall of the magazine of said barrel to open the magazine and project themarking leads from the rear end when the magazine is opened.

16. A pencil, a casing, a removable lead operating unit formed ofseparable sections positioned in said casing to form a magazinethereabout, adapted to project the leads in the magazine out of the rearend thereof when said unit is partially withdrawn, and a resilient leadcarrier adapted to form spring tension between said sections.

17. In a pencil, having a lead-propelling means detachable from thecasing 01'? said pencil, attaching and spacing means at tached to saidpropelling means to form a magazine space about said propelling means inthe pencil casing, 'an operating member extending axially through saidpropelling means and independently separable there from, said propellingmeans exposing the contents in the magazine and leaving the casing ofthe pencil. entirely empty when the same is withdrawn therefrom.

18. In a mechanical pencil, a casing, a

lead propelling mechanism formed of sepa-.

rable sections, means for holding said sections collectively in or outof said casing and compensating means adapted to term a uniform tensionbetween said sections and to term the lead carrier for said pencil.

In testimony whereof I aiiix my signature.

HOWARD L. FISCHER.

